Keratin 3
Keratin 3 also known as cytokeratin 3 is a protein that in humans is encoded by the KRT3 gene.<ref name="pmid7510223">Template:Cite journal</ref><ref name="pmid16831889">Template:Cite journal</ref> Keratin 3 is a type II cytokeratin. It is specifically found in the corneal epithelium together with keratin 12.
Mutations in the KRT3 encoding this protein have been associated with Meesmanns Corneal Dystrophy.<ref name="pmid9171831">Template:Cite journal</ref>